CN103490794A - Variable shortwave antenna tuner matching network structure circuit - Google Patents
Variable shortwave antenna tuner matching network structure circuit Download PDFInfo
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- CN103490794A CN103490794A CN201310405553.0A CN201310405553A CN103490794A CN 103490794 A CN103490794 A CN 103490794A CN 201310405553 A CN201310405553 A CN 201310405553A CN 103490794 A CN103490794 A CN 103490794A
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Abstract
Provided is a variable shortwave antenna tuner matching network structure circuit. A set of series inductor is connected with a radio frequency antenna, the two ends of the series inductor are connected with a set of first grounding capacitor and a set of second grounding capacitor in parallel respectively, switches controlled by a relay are connected on the first capacitor and the second capacitor in series, and a short circuit switch controlled by the relay is also connected on the inductor in parallel. The second grounding capacitor connected with the radio frequency antenna is selected to be in grounding connection through a switching switch or to be directly connected with the radio frequency antenna through a wire. The radio frequency antenna is also connected with a switching switch which is used for selecting the connecting positions of the series inductor and the parallel grounding capacitors or being connected with the second grounding capacitor which is directly connected with the radio frequency antenna through the wire. When the circuit is in parallel connection, the circuit can be used as the auxiliary network of an LC network structure, and when the circuit is in series connection, the circuit can be used as the main network of a CC network structure. The circuit is flexible in use, strong in adaption capacity and small in power loss.
Description
One, technical field
The invention belongs to design of electronic circuits, especially relating to restore a reactionary rule adjusts the design of matching network structural circuit.
Two, background technology
Shortwave antenna tuning coupler (adjusting hereinafter to be referred as sky) is to realize that transmitter is to the impedance matching between antenna, and the power of transmitter can be transferred on antenna to greatest extent.It matching network of adjusting is comprised of many groups inductance and electric capacity, lossless network in theory, but in fact, electric capacity and inductance all can not be accomplished idealized, certainly exist spurious impedance, especially large inductance in use can generate heat, and has illustrated that the part radio-frequency power is converted into heat energy in tune inside, sky.The coupling bandwidth of network on each frequency is narrower in addition, is subject to the impact of capacitor and inductor span and precision, and the loss that also can make power adjust in sky increases.
The matching network structure of day tune mainly contains CC network (master network is series capacitance and shunt capacitance) and LC network (master network is series inductance and shunt capacitance) at present, the antenna system difference that they are applicable, general CC network is applicable to impedance and mainly is perceptual antenna, and the LC network is applicable to the antenna that impedance mainly is capacitive.But in fact antenna can not all be perception or capacitive at full frequency band, so the close antenna end that generally can adjust in sky adds secondary network, for regulating the impedance of antenna, make the master network adjustable zone of the impedance ranges of antenna at the sky tune,, but but the value of secondary network is very limited, may increase day power loss of tune.And, along with the development of antenna technology, the kind of antenna is also more and more, impedance operator also becomes increasingly complex, and independent CC network or LC network have been not suitable with complicated antenna impedance characteristic, increase on the contrary the loss that radio-frequency power is adjusted in sky.
Three, summary of the invention
The present invention realizes a kind of variable sky tune matching network structural design mode, in the situation that do not increase as far as possible a day tune volume, make matching network can automatically be chosen as series system or parallel way according to the impedance operator of antenna near the electric capacity of antenna end, change day version of tune matching network, the matching range that expansion day is adjusted, increase the kind of adaptive antenna, reduce the loss that power is adjusted in sky, improve the reliability of short wave communication.
Technical scheme of the present invention is: can restore a reactionary rule and adjust the matching network structural circuit, connect radio-frequency antenna by one group of series inductance, the two ends of series inductance are in parallel one group of first and one group of second ground capacity respectively, the switch that on the first and second electric capacity, series relay is controlled, the also short switch of Control in parallel on inductance; The second ground capacity be connected with radio-frequency antenna is selected ground connection or is directly connect radio-frequency antenna by wire by change over switch; Radio-frequency antenna also connects a change over switch, for selecting series inductance and earth electric capacity junction, or connects above-mentioned the second ground capacity and directly connects radio-frequency antenna by wire.
The span of first group of ground capacity C1 is 0～5120pF, and the value precision is 5pF; The span of second group of ground capacity C2 is 0～2048pF, and the value precision is 2pF.
The span of series inductance L1 is 0～32uH, and the value precision is 0.03uH.
Inductance or electric capacity that series inductance L1, two groups of ground capacity C1 and C2 are multiplied by 10 values respectively form.
Whether the K switch 1 of Control, K2, K3 are linked into network to each discrete inductance or electric capacity on network to be controlled, the switch that the upper series relay of capacitor C 1 and C2 is controlled is respectively K1, K3, K2 is the short switch in parallel with inductance L 1, the K4 of Control, K5 switch are that the string in network mode are switched to C2, K5 mono-end connects radio-frequency antenna, the other end connects the earth terminal of series inductance L1 or C2, and C2 selects ground connection or directly connects radio-frequency antenna by wire by change over switch K4; When K4 gets to the b end, K5 gets to a end, and C2 is connected in network with parallel way; When K4 gets to a end, K5 gets to the b end, and C2 is connected in network with series system.
The invention has the beneficial effects as follows: by the CC network together with the LC network integration, secondary network in original LC network is passed through to the relay switch switch, be designed to changeable-shaped, secondary network while can be used as the LC network configuration when parallel connection, when series connection, the master network while can be used as again the CC network configuration, used flexibly, adaptation ability is strong, and power loss is little.The present invention can be applied to and bear or the vehicle shortwave sky is adjusted, and increases sky and adjusts the kind of joining antenna, reduces power and adjusts inner loss in sky, improves the reliability of short wave communication.
Four, accompanying drawing explanation
Fig. 1 adjusts matching network structural design schematic diagram for restoring a reactionary rule;
Fig. 2 adjusts the humorous schematic diagram of joining of matching network for restoring a reactionary rule.
Five, embodiment
Restored a reactionary rule tune matching network structural design schematic diagram in the present invention as shown in Figure 1, C1 in figure, C2 are formed in parallel by 10 discrete electric capacity that are multiplied, and the span of C1 is 0～5120pF, and the value precision is 5pF, the span of C2 is 0～2048pF, and the value precision is 2pF; L1 in figure is in series by 10 discrete inductance that are multiplied, and the span of L1 is 0～32uH, and the value precision is 0.03uH; Whether the K switch 1 of Control, K2, K3 are linked into network to each discrete inductance corresponding on network or electric capacity to be controlled, the K switch 4 of Control, K5 are that the string in network mode are switched to C2, when K4 gets to the b end, K5 gets to a end, and C2 is connected in network with parallel way; When K4 gets to a end, K5 gets to the b end, and C2 is connected in network with series system.
Can restore a reactionary rule adjust matching network join humorous schematic diagram as shown in Figure 2, the abscissa R of figure middle impedance circle diagram means the antenna impedance value of real part, ordinate X means the antenna impedance imaginary values, the upper semi-circle of crossing initial point and 50 Ω match points of take is divided into impedance chart as line of demarcation I, II, III, V zone, when antenna impedance is positioned at the I zone, C2 is placed in to series model, jointly complete joining of antenna as master network and C1 humorous, because whole process is not used inductance, thus power loss can than with joining of inductance humorous mode little; When antenna impedance is positioned at II when zone, can be without C2, can complete joining of antenna with L1 and C1 humorous; When antenna impedance is positioned at III or V zone, C2 is placed in to paralleling model, select minimum C2 value (increasing the coupling bandwidth, the minimizing power loss) as secondary network, antenna impedance is adjusted to the II zone, and then it is humorous to complete joining of antenna with L1 and C1.
The variable circuit structure of this master network can be selected best network configuration according to the antenna impedance value of different frequent points, reduces radio-frequency power and adjusts inner loss in sky.
Claims (5)
1. can restore a reactionary rule and adjust the matching network structural circuit, it is characterized in that connecting radio-frequency antenna by one group of series inductance, the two ends of series inductance are in parallel one group of first and one group of second ground capacity respectively, the switch that on the first and second electric capacity, series relay is controlled, the also short switch of Control in parallel on inductance; The second ground capacity be connected with radio-frequency antenna is selected ground connection or is directly connect radio-frequency antenna by wire by change over switch; Radio-frequency antenna also connects a change over switch, for selecting series inductance and earth electric capacity junction, or connects above-mentioned the second ground capacity and directly connects radio-frequency antenna by wire.
2. according to claim 1 the change of weather adjusted the matching network structural circuit, and the span that it is characterized in that the first ground capacity C1 is 0～5120pF, and the value precision is 5pF; The span of the second ground capacity C2 is 0～2048pF, and the value precision is 2pF.
3. according to claim 1 the change of weather adjusted the matching network structural circuit, it is characterized in that restoring a reactionary rule and adjusts the matching network structural circuit, and the span that it is characterized in that series inductance L1 is 0～32uH, and the value precision is 0.03uH.
4. according to claim 1 the change of weather adjusted the matching network structural circuit, it is characterized in that inductance or electric capacity that series inductance L1, ground capacity C1 and C2 are multiplied by 10 values respectively form.
5. according to claim 1 the change of weather adjusted the matching network structural circuit, the K switch 1 that it is characterized in that Control, K2, whether K3 is linked into network to each discrete inductance or electric capacity on network to be controlled, the switch that the upper series relay of capacitor C 1 and C2 is controlled is respectively K1, K3, K2 is the short switch in parallel with inductance L 1, the K4 of Control, the K5 switch is that the string in network mode are switched to C2, K5 mono-end connects radio-frequency antenna, the other end connects the earth terminal of series inductance L1 or C2, C2 selects ground connection or directly connects radio-frequency antenna by wire by change over switch K4, when K4 gets to the b end, K5 gets to a end, and C2 is connected in network with parallel way, when K4 gets to a end, K5 gets to the b end, and C2 is connected in network with series system.
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| CN201310405553.0A CN103490794B (en) | 2013-09-09 | 2013-09-09 | Variable shortwave antenna tuner matching network structure circuit |
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| CN201310405553.0A CN103490794B (en) | 2013-09-09 | 2013-09-09 | Variable shortwave antenna tuner matching network structure circuit |
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| CN103490794B CN103490794B (en) | 2015-04-22 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928769A (en) * | 2014-03-25 | 2014-07-16 | 联想(北京)有限公司 | Antenna matching method and circuit and electronic device |
| CN105161866A (en) * | 2015-08-31 | 2015-12-16 | 宇龙计算机通信科技(深圳)有限公司 | Antenna tuner, multi-band antenna and mobile terminal |
| WO2016064528A1 (en) * | 2014-10-23 | 2016-04-28 | Qualcomm Incorporated | Circuits and methods providing three-level signals at a synchronous buck converter |
| CN106329132A (en) * | 2015-06-17 | 2017-01-11 | 北京北广科技股份有限公司 | Frequency switching method for medium-wave antenna matching network |
| CN106384893A (en) * | 2016-11-15 | 2017-02-08 | 上海传英信息技术有限公司 | Antenna matching circuit and wireless communication terminal |
| CN106788311A (en) * | 2016-11-30 | 2017-05-31 | 宇龙计算机通信科技(深圳)有限公司 | A kind of terminal capabilities improves circuit and mobile terminal |
| US9793804B2 (en) | 2014-10-23 | 2017-10-17 | Qualcomm Incorporated | Circuits and methods for controlling a three-level buck converter |
| CN108539379A (en) * | 2018-03-27 | 2018-09-14 | 广东欧珀移动通信有限公司 | Antenna system and related product |
| CN109121443A (en) * | 2016-05-27 | 2019-01-01 | 华为技术有限公司 | Closed loop aperture adjustable antenna |
| CN109193117A (en) * | 2018-09-13 | 2019-01-11 | 维沃移动通信有限公司 | A kind of mobile terminal and method of controlling antenna |
| CN112713904A (en) * | 2020-12-23 | 2021-04-27 | 陕西烽火电子股份有限公司 | Composite tuning network and antenna tuner |
| CN113395081A (en) * | 2020-09-30 | 2021-09-14 | 锐石创芯（深圳）科技有限公司 | Radio frequency switch circuit, radio frequency front end circuit and wireless device |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928769A (en) * | 2014-03-25 | 2014-07-16 | 联想(北京)有限公司 | Antenna matching method and circuit and electronic device |
| US9843259B2 (en) | 2014-10-23 | 2017-12-12 | Qualcomm Incorporated | Circuits and methods providing three-level signals at a synchronous buck converter |
| WO2016064528A1 (en) * | 2014-10-23 | 2016-04-28 | Qualcomm Incorporated | Circuits and methods providing three-level signals at a synchronous buck converter |
| US9450491B2 (en) | 2014-10-23 | 2016-09-20 | Qualcomm Incorporated | Circuits and methods providing three-level signals at a synchronous buck converter |
| CN106797180A (en) * | 2014-10-23 | 2017-05-31 | 高通股份有限公司 | The circuit and method of three level signal are provided at synchronous buck converter |
| US9793804B2 (en) | 2014-10-23 | 2017-10-17 | Qualcomm Incorporated | Circuits and methods for controlling a three-level buck converter |
| CN106329132A (en) * | 2015-06-17 | 2017-01-11 | 北京北广科技股份有限公司 | Frequency switching method for medium-wave antenna matching network |
| CN106329132B (en) * | 2015-06-17 | 2019-06-18 | 北京北广科技股份有限公司 | A kind of frequency switching method of medium-wave antenna allotting network |
| CN105161866A (en) * | 2015-08-31 | 2015-12-16 | 宇龙计算机通信科技(深圳)有限公司 | Antenna tuner, multi-band antenna and mobile terminal |
| US11211698B2 (en) | 2016-05-27 | 2021-12-28 | Futurewei Technologies, Inc. | Closed loop aperture tunable antenna |
| US10797387B2 (en) | 2016-05-27 | 2020-10-06 | Futurewei Technologies, Inc. | Closed loop aperture tunable antenna |
| CN109121443A (en) * | 2016-05-27 | 2019-01-01 | 华为技术有限公司 | Closed loop aperture adjustable antenna |
| US10637138B2 (en) | 2016-05-27 | 2020-04-28 | Futurewei Technologies, Inc. | Closed loop aperture tunable antenna |
| CN106384893A (en) * | 2016-11-15 | 2017-02-08 | 上海传英信息技术有限公司 | Antenna matching circuit and wireless communication terminal |
| CN106788311A (en) * | 2016-11-30 | 2017-05-31 | 宇龙计算机通信科技(深圳)有限公司 | A kind of terminal capabilities improves circuit and mobile terminal |
| CN108539379B (en) * | 2018-03-27 | 2019-08-02 | Oppo广东移动通信有限公司 | Antenna system and Related product |
| CN108539379A (en) * | 2018-03-27 | 2018-09-14 | 广东欧珀移动通信有限公司 | Antenna system and related product |
| CN109193117A (en) * | 2018-09-13 | 2019-01-11 | 维沃移动通信有限公司 | A kind of mobile terminal and method of controlling antenna |
| CN113395081A (en) * | 2020-09-30 | 2021-09-14 | 锐石创芯（深圳）科技有限公司 | Radio frequency switch circuit, radio frequency front end circuit and wireless device |
| CN113395081B (en) * | 2020-09-30 | 2022-05-06 | 锐石创芯(深圳)科技股份有限公司 | Radio frequency switch circuit, radio frequency front end circuit and wireless device |
| CN112713904A (en) * | 2020-12-23 | 2021-04-27 | 陕西烽火电子股份有限公司 | Composite tuning network and antenna tuner |
| CN112713904B (en) * | 2020-12-23 | 2022-08-19 | 陕西烽火电子股份有限公司 | Composite tuning network and antenna tuner |
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| CN103490794B (en) | 2015-04-22 |
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